Device for splitting glass.



H. F. HITNER,

DEVICE FOR SPUTTING GLASS.

APPLICATION FILED JUNE 26.19l6.

1,296,66 l. Patented Mar. 11,1919.

WITNESS;

- HARRY r. EITHER,

or mounzr- VERNON, OHIO, AssIenoa TO rrr'rsnnnan PLATE. crass comrm, A.conrom'rron or PENNSYLVANIA.

DEVICE FOR SPLITTING- GLASS.

Specification of Letters Patent.

Patented Mar. 11, 1919.

Application filed June 26, 1916. Serial No: 105,926.

To all who m it may concern ,Be it known that I, HARRY F. HITNER,'a

citizen of the United 'States, residing at Mount Vernon, in the countyof Knox and State of Ohio, have invented a certain new and useful-Devicefor Splitting Glass, of

which the following is 'a specification.

The invention relates to a means adapted for splitting glass, andparticularly glass ofconnection involving the use cylinders, byelectricity. It has for its principal objects, the provision of a device(1) having improved means for making the contacts with-the thin band orsplitting ribbon of high. resistance material employed, and one in whichthe burning in two of the band at these points is prevented, (2) havingan improved and simplified wiring arrange- I merit and (3) having animproved means for preventing short bends and consequent breaking of thesupply wires. One embodiment of the invention is illustrated in theaccompanying drawings, wherein- Figure 1 is ,a side elevation of thedevice;

Fig. 2 is a p rtial side elevation on an enlarged scale 0 the connectingmeans at one end-of the device; and Figs. 3, 4, 5 and 6 are sections. onthe lines III-III, -IVIV, VV and'VIVI of Fig. 1.

' Referring to the drawings, 1 1s the framework of the device having anoperating portion 2 at one end and a handle portion 3 at -6 carries acontact block 8, preferably of brass or similar material, held inposition by means of the screws 9. The block 8 isprovided with atransverse groove 10 adjacent its forward end, and the end of the band 5is clamped in this groove by the pointed end 7 of the spring 6. I havefound this method of the groove and the pointed clamping end of greatadvantage since the contact thus provided is most efiective and theburning off of the ribbon at this point is avoided. The spring tion,

6 serves to apply any desired amount of tenslon to the band 5.

The right-hand end of the band is clamped against a block 11 by means ofa spring 12 and a pair of screws 13 and 14, the block being grooved andthe method of connection being the same as that just described andillustrated in connection with Fig. 2. The block 11 is held in positionby means of the stud 15 and nut 16 (Fig. 4) and.

the block, stud, and nut insulated by the.

members 17 18 and 19, as shown in Fig.4;

The handle portion of the frame is-pro vided with a pair of terminalblocks 20 and 21 to which the wires of the cable 22 are ,attached bymeans of the screws 23 and 24. The block 21 is held .to the handleportion by the stud 25 and is'grounded on the framework so that currentsupplied at this point flows through the framework to the block 8 at theleft-hand end of the framework. The other terminal block 20 is securedin position by means of the stud 26 and nut 27 and is insulated from thehandle portion 3 by means of the members28, 29 and 30, as illustrated inFig. 5. This insulated terminal block 20 is connected by means of thewire 31 (Fig. 1) with the other'insulated block 11 (Fig. 4) lying at.the right-hand end of the splitting ribbon 5.

It will be seen that thev foregoing constitutes a simple wiringarrangement, since allv that is necessary is the insulation of theblocks 11 and 20 and their connection by means of the wire 31, the otherelectrical connections being provided by grounding the blocks 8 and 21upon the metal framework. 5

Secured to the handle portion 3 of the framework is the guard member 32having its end 33 opposite the terminal blocks 20 and. 21 and providedwith a perforation 34 for the passage of the cable 22. This guard ispreferably made of U-shape in cross-secas indicated in Fig. 6, and isheld in place by means of the screw 35. This member protects the wiresagainst breakage at their points of attachment to the terminal blocks 20and 21 since the portion 33 of the guard allows only a slight backwardand forward movement of the cable, the principal bending occurring inthe cable at the point 36, and such curve is much less abrupt than thatwhich occurs where the wires are secured to the terminal blocks.

What I claim is: 1. In an electrical splitting device, a sup port, ametal terminal block carried thereby,

a high-resistance band adapted to be heated electrically to arelativelyhigh temperature, means for securing one end of the band to the block,means for securing the other'end of the-band to the support, acontacting surface on the block intermediate the points at which theband is secured, and means for applying tension to the band to hold itin engagement with said contactingsurface.

2. In an electrical splitting device, a metal terminal block carriedthereby, a highresistance band adapted to be heated electrically to arelatively high temperature, means for securing the band to the block, acontact surface on the'blockvover which said band 'is bent and lyingbetween the means for securing the band to the block and the other endof the band, and means for applying tension to the band to hold the bentportion in engagement with thecontaet surface.

3. In an electrical splitting device, a

1 metal terminal block, a springcarrying said block, a high resistanceband adapted to be heated electricallyto a relatively high temperature,means for cl 'mping the end of the band to theblock, an i a contactsurface on the block engaging j'hid band, and lying between saidclamping means and the other end of the band, said spring being arrangedto apply tension to the band to hold it in engagement with the contactsurface.

4. In an electrical splitting device, a metal terminal block providedintermediate its ends with a transverse groove, a high resistance bandfixed at one end and having its other end extending across the groove, aclampingedge for forcing the band into the groove, and means foryieldingly forcing the block awayv from the fixed end of the band tocause the band to yieldingly en- I gage the block in advance of theclamping band into said groove, the said band yield ingly engaging theblock intermediate the groove and the other end of the band,

whereby overheating of the edge and the band at the point of bending isavoided.

6. In an electrical splitting device, a ter-- minal block of meta]having a transverse groove, a fiat hlgh resistance band having its endextending transversely across the groove, and a spring clamping meansfor carrying the block and for applyingtension to theband and having apointed edge for engaging the band opposite the groove.

7. In an electrical splitting device, a terminal block of metal having agroove, aflat high resistance band fixed at one end and having its otherend extending transversely across the groove, and a spring clampingmeans for carrying the block and for applying tension to the band andhaving a pointed edge for engaging the band opposite the groove, thesaid band being bent over a part of the block in advance of the saidedge.

HARRY F. HITXER.

